.container {
    width: 100%;
}
.underBox{
    width: 100%;
    height: 1150px;
    position: relative;
    top: 178px;
    overflow: auto;
    background-color: #fff;
}
.count {
    height: 60px;
    width: 100%;
    background-color: #F4F4F4;
    display: flex;
    align-items: center;
}

.countText {
    font-size: 24px;
    color: #999;
    margin-left: 24px;
}

/* 字母表  没功能，就是个样式 */
.letter {
    position: fixed;
    top: 351px;
    right: 13px;
    height: 784px;
    width: 22px;
    color: #40A9FF;
    font-size: 22px;
    text-align: center;
    line-height: 28px;
}